Intro
The Stencil File Editor offers you the option of direct browser access to the code that makes up your theme, without having to install Stencil CLI (command-line interface). This is ideal for making minor adjustments to your theme that cannot be done directly within Theme Editor, or for adding scripts to integrate apps.
These instructions cover the basic steps to access Stencil-based themes template files and edit their HTML/CSS using the in-browser editor. For information about customizing Blueprint themes, see Accessing and Customizing Template Files (Blueprint).
This is an advanced feature, and requires knowledge of HTML/CSS and Handlebars. For major design adjustments, or new theme development, we recommend that you or your developer use Stencil CLI, which provides access to all theme files.